* {
  margin: 0;
  padding: 0;
  list-style: none;
}
body {
  overflow-x: hidden;
}
.swiper-box {
  height: 4.309rem;
  min-height: 270px;
  /* 820px -> 4.309rem */
  width: 100vw;
  position: relative;
}
.swiper-box nav {
  width: 1200px;
  height: 60px;
  position: absolute;
  top: 50px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.swiper-box nav i {
  display: none;
}
.swiper-box nav img {
  width: 200px;
  height: 100%;
  margin-right: 30px;
}
.swiper-box nav ul {
  position: relative;
  flex: auto;
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.swiper-box nav ul li {
  cursor: pointer;
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 18px;
  font-weight: 900;
  color: aliceblue;
}
.swiper-box nav ul .hoverDiv {
  opacity: 0;
  position: absolute;
  left: 0;
  top: 60px;
  width: 121.25px;
  height: 5px;
  background-color: #447be8;
  z-index: -1;
  transition: 0.3s;
}
.swiper-box nav ul li:nth-child(1):hover ~ .hoverDiv {
  opacity: 1;
  left: 0px;
}
.swiper-box nav ul li:nth-child(2):hover ~ .hoverDiv {
  opacity: 1;
  left: 121.25px;
}
.swiper-box nav ul li:nth-child(3):hover ~ .hoverDiv {
  opacity: 1;
  left: 242.5px;
}
.swiper-box nav ul li:nth-child(4):hover ~ .hoverDiv {
  opacity: 1;
  left: 363.75px;
}
.swiper-box nav ul li:nth-child(5):hover ~ .hoverDiv {
  opacity: 1;
  left: 485px;
}
.swiper-box nav ul li:nth-child(6):hover ~ .hoverDiv {
  opacity: 1;
  left: 606.25px;
}
.swiper-box nav ul li:nth-child(7):hover ~ .hoverDiv {
  opacity: 1;
  left: 727.5px;
}
.swiper-box nav ul li:nth-child(8):hover ~ .hoverDiv {
  opacity: 1;
  left: 848.75px;
}
.swiper-box .black {
  background-color: rgba(0, 0, 0, 0.7);
  position: fixed;
  top: 0;
  width: 100vw;
  padding: 0 100px;
}
.containerBox1-bg {
  width: 100vw;
  background: #ffffff;
}
.containerBox1-bg .containerBox1 {
  padding-top: 40px;
  padding-bottom: 40px;
  width: 96%;
  background-color: #ffffff;
}
.containerBox1-bg .containerBox1 .row div {
  text-align: center;
  height: 750px;
}
.containerBox1-bg .containerBox1 .row .box1 h1 {
  margin-top: 30px;
  font-weight: 900;
}
.containerBox1-bg .containerBox1 .row .box1 p {
  font-size: 18px;
  margin-bottom: 40px;
}
.containerBox1-bg .containerBox1 .row .box1 .containerBox1-swiper-box {
  height: 75%;
  width: 100%;
}
.containerBox1-bg .containerBox1 .row .box1 .containerBox1-swiper-box #carousel-example-generic {
  height: 100% !important;
}
.containerBox1-bg .containerBox1 .row .box1 .containerBox1-swiper-box #carousel-example-generic .carousel-inner {
  height: 100% !important;
}
.containerBox1-bg .containerBox1 .row .box2 {
  padding: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.containerBox1-bg .containerBox1 .row .box2 div {
  height: 47%;
  width: 100%;
  background-color: #4963cb;
}
.containerBox1-bg .containerBox1 .row .box2 .box2-1 {
  background-color: #cc8f3f;
  background-image: url(../images/b1.jpg);
  background-repeat: no-repeat;
  background-size: cover;
  color: #ffffff;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}
.containerBox1-bg .containerBox1 .row .box2 .box2-1 h2 {
  font-weight: bolder;
}
.containerBox1-bg .containerBox1 .row .box2 .box2-2 {
  background-image: url(../images/b2.png);
  background-repeat: no-repeat;
  background-position: top right;
  padding: 20px 40px;
  text-align: left !important;
  color: aliceblue;
}
.containerBox1-bg .containerBox1 .row .box2 .box2-2 .btns {
  background-color: transparent;
  margin-top: 20px;
  width: 80%;
  display: flex;
  flex-wrap: wrap;
}
.containerBox1-bg .containerBox1 .row .box2 .box2-2 .btns .btn-primary {
  text-align: left;
  margin: 5px 5px;
  padding: 5px 30px;
  height: 40px;
  border: 0.5px solid #7387bf;
  background-color: #4761c9 !important;
}
.containerBox1-bg .containerBox1 .row .box2 .box2-2 h1 {
  font-weight: bolder;
}
.opacityBox {
  position: fixed;
  left: 0px;
  top: 0px;
  width: 100vw;
  height: 100vh;
  background-image: url(../images/bg.jpg);
  background-repeat: no-repeat;
  background-size: cover;
  background-attachment: scroll;
  background-position: 50% 100%;
  z-index: -999;
}
section {
  width: 100vw;
  height: 1000px;
  color: #ffffff;
}
section .topBox {
  height: 70%;
  width: 1400px;
  margin: auto;
  display: flex;
}
section .topBox .left {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 65%;
  height: 100%;
}
section .topBox .left h5 {
  margin-bottom: 60px;
}
section .topBox .left p {
  text-indent: 2em;
}
section .topBox .left .last {
  margin-bottom: 60px;
}
section .topBox .left .btn {
  width: 180px;
  height: 50px;
  background-color: transparent;
  border: 1px #ffffff solid;
}
section .topBox .right {
  width: 35%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
section .topBox .right .gridBox {
  margin: auto;
  width: 90%;
  height: 400px;
  /* 高度保持为 400px */
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: repeat(2, 1fr);
  grid-gap: 50px;
}
section .topBox .right .gridBox .item {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
section .topBox .right .gridBox .item img {
  width: 40%;
  height: 50%;
}
section .bottomBox {
  height: 30%;
  width: 100%;
  background-color: rgba(33, 74, 187, 0.5);
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
}
section .bottomBox p {
  font-size: 22px;
}
section .bottomBox .btn {
  width: 280px;
  height: 50px;
  background-color: transparent;
  border: 1px #ffffff solid;
}
.containerBox2 {
  width: 100vw;
  padding-bottom: 40px;
  padding-top: 40px;
  background-color: #ffffff;
}
.containerBox2 .row {
  display: flex;
  justify-content: center;
  align-items: center;
}
.containerBox2 .row .item {
  height: 285px;
  width: 700px;
}
.containerBox2 .row .item .title {
  height: 30%;
  font-size: 30px;
  color: #365da8;
}
.containerBox2 .row .item .mediabox {
  height: 70%;
  display: flex;
}
.containerBox2 .row .item .mediabox .imgbox {
  width: 45%;
  height: 100%;
  overflow: hidden;
}
.containerBox2 .row .item .mediabox .imgbox img {
  width: 100%;
  height: 100%;
  transition: 1s;
}
.containerBox2 .row .item .mediabox .imgbox:hover img {
  transform: scale(1.1);
}
.containerBox2 .row .item .mediabox .textbox {
  padding: 10px 10px;
  height: 100%;
  flex: 1;
}
.containerBox2 .row .item .mediabox .textbox h4 {
  width: 90%;
  text-wrap: nowrap;
  overflow: hidden;
  /* 隐藏溢出的内容 */
  text-overflow: ellipsis;
}
.containerBox2 .row .item .mediabox .textbox p {
  font-size: 16px;
}
footer {
  height: 475px;
  width: 100vw;
  background-color: #2d2d2d;
  color: #ffffff;
}
footer .nav {
  width: 1300px;
  height: 20%;
  margin: auto;
  border-bottom: 1px solid #626060;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
footer .nav img {
  width: 210px;
  height: 60%;
  margin-right: 30px;
}
footer .nav ul {
  position: relative;
  flex: auto;
  height: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
footer .nav ul li {
  cursor: pointer;
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 16px;
  color: aliceblue;
}
footer .top {
  margin: auto;
  height: 55%;
  width: 1300px;
  display: flex;
}
footer .top .left {
  width: 70%;
  height: 100%;
  display: flex;
}
footer .top .left .item {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-indent: 5px;
}
footer .top .left .item img {
  width: 70px;
  height: 70px;
}
footer .top .left .item p {
  margin-top: 10px;
  font-size: 18px;
}
footer .top .right {
  width: 30%;
  height: 100%;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}
footer .top .right img {
  height: 60%;
}
footer .bottom {
  margin: auto;
  height: 20%;
  width: 1300px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 15px;
}
aside {
  height: 100vh;
  width: 200px;
  background-color: #2d2d2d;
  color: #878787;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  display: none;
}
aside li {
  width: 100%;
  padding: 10px 20px;
  cursor: pointer;
}
aside li:hover {
  background-color: #4e4e4e;
  color: #ffffff;
}
